Oh, the old gray mashie, ain't what she used to be,
Ain't what she used to be, ain't what she used to
be.
The old gray mashie, ain't what she used to be,
Many long years ago.

The story:

Not much to tell, heard someone singing this once on
TV and recently watched a new episode of the
Simpsons and someone in it mentioned the old grey
mare song and reminded me that I have heard this
song wrong before.